<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>购物车案例</title>
    <link rel="stylesheet" href="./res/style.css">
</head>
<body>
    <div id="app">
        <div v-if="books.length>0">
            <table>
                <thead>
                    <tr>
                        <th></th>
                        <th>书籍名称</th>
                        <th>出版日期</th>
                        <th>价格</th>
                        <th>购买数量</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for="(item,index) in books">
                        <td>{{item.id}}</td>
                        <td>{{item.name}}</td>
                        <td>{{item.date}}</td>
                        <td>{{"￥"+item.price.toFixed(2)}}</td>
                        <td> <button @click="decrease(index)" :disabled="item.count < 1">-</button> {{item.count}}
                            <button @click="increase(index)">+</button></td>
                        <td> <button @click="remove(index)"> 移除 </button> </td>
                    </tr>
                </tbody>
            </table>
            
            <h4>总价：{{"￥"+totalPrice.toFixed(2)}}</h4>
            <h4>总价：{{showPrice(totalPrice)}}</h4>
            <h4>总价：{{totalPrice | improvePrice}}</h4>
            <h4>总价：{{totalPrice | improve}}</h4>
        </div>
        <h2 v-else>购物车为空</h2>
    </div>

    <script src="../js/vue.js"></script>
    <script src="./js/main.js"></script>    
</body>
</html>
